Automatic weighing-machine.



N'c. 801,822. PATENTED OCT. 10, 1905. C. P. BBAKBANB 6L W. E. HIPKINS.

AUTOMATIC WEIGHING MACHINE.

APPLICATION FILED JUNE 12,1905.

2 SHEETS-SHEET 1.

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INVENTORS liomey .'PATENTED OCT. l0', 1905.

C. F. BEAKBANE n W. E. HIPKINS.

AUTOMATIC WBIGHING MACHINE.

APPLICATION FILED JUNE 12.1905.

2 SHEETS-SHEET 2.`

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UNITED srafrEs PATENT OFFICE.

CHARLES F. BEAKBANE AND IVILLIAM E. HIPKINS, OF BIRMINGHAM',

ENGLAND.

AUTOMATIC-wEleHlNe-MACHINE.

Specification of Letters Patent.

Patented Oct. 10, 1905.

Original application filed June 16, 1904, Serial No. 212,85 9. Dividedand this application filed June 12,1905. Serial No. 264,936

.To @ZZ whom, it may concern,.-

' specification.

To insure accurate weighments in automatic weighing-machines, it isimperative that the amount of grain or other flowing material held insuspension during the dribble period should be constant and equal, sothat the amount of-Inaterial in suspension when the final cut-ofi' isaccomplished shall in each Weighment be exactly alike.

To obviate the liability of insufficiency of a constant and equal supplyduring the-dribble period is the object of our invention.

Our improvement consists of an arrangement of a valve mechanism adaptedfor use in connection with weighingmachines in which a supplementaryhopper is employed to deliver the dribble or diminished supply to theweigh-hopper, and particularly for use in connection with thearrangement of hoppers and discharge-spouts referred to.in our pendingapplication for improvements in automatic weighing machines, Serial No.212,859, tiled June 16, 1904, and of which the` present is a divisionalapplication.

Our invention will be more clearly understood by reference to theaccompanying drawings, in which- Figure 1 is a front elevation of anembodiment of our invention; Fig. 2, a side elevation of the same,showing the machine at rest; Fig. 3, a side elevation showing themachine when the full supply is being delivered through the maindischarge-spout; and Fig. 4 a side elevation showing the machine whenthe d ribble or diminished supply is being delivered, the same lettersof reference being used to in dicate similar parts throughout thevarious figures.

In the construction and arrangement of hoppers to which our improvedvalve mechanism is particularly adapted the supplementary hopper A isplaced inside the main hopper B and so located with reference theretoand to the means of supply C that the iiow of material is first directedto the supplementary hopper and the overfiow therefrom into the mainhopper. mentary hopper is reduced in area to form a hollow shaft orspout D, which is carried within the spout E of thc main hopper andcontinues down to the cut-off gate, where it is supplied with brushes Ffor sealing the joint with the main gate of the valve mechanism.

The valve mechanism comprises a two-part struct-ure adapted to moveacross the discharge ends of the spouts D and E to control the dischargetherefrom, the said parts cooperating to jointly close both of saidspouts and to open each separately in the complete operation of feedingthe main and dribble supply of material at each weighment.

G designates the main gate, suitably pivoted to the frame of themachine, and H asupplementary gate pivoted at I upon the spoutE.

K is a fiange or projection-piece upon the main gate G, adapted toengage the supplementary gate to move the .same away from the dischargeend of the dribble-spout in the closing movement of the main gate, thesaid supplementary gate adapted to swing by gravity across the dischargeend of the dribblespout as the main gate is moved to openposition.

L is a stop to limit the closing movement of the d ribble-gate.

The operation of the machine is as follows: When the material isdelivered to the large hopper B, the smaller hopper A becomes firstfilled and overflows. The machine commences The lower portion of thevsupplef the main hopper, as is usual, and the main gate moves upward,and so allows the material to fall through the aperture in the spout Eto the weigh-hopper below. (Not shown.) The opening of the main gate Gallows the smaller gate H to fall until it cuts od the supply from thespout D of the supplementary hopper, the gate H being held from furtherforward movement by the stop L. Then nearly the required amount ofmaterial has passed through the spout E, the main gate G descends by theaction of the machine in the usual manner, and in its descent theprojectionpiece K, fixed on the main gate G, strikes the smaller gate H,and thereby pushes it up, and so unseals the spout D of thesupplementary hopper, thus insuring a suiiicient and IOO even How ofmaterial to complete the weighment. During this operation the gate Hrests against the projection-pice K in such a manner that the materialcan only be supplied through the spout D, which material then passesthrough an aperture in the main gate Gr of the same area as the spout D.When the required amount has been obtained, the main gate G completesits descent by the action of the machine, carrying with it the smallergate H, until they assume the position shown in Fig. 2, thereby cuttingoff the dribble-supply from the spout D.

What we claim is- 1. In a feeding device for automatic weighing-machinesfor grain and the like,ra main supply-hopper, a dribble supply-hopper,independent discharge-spouts for said hoppers, and a valve comprising amain gate adapted to move across the discharge ends of both of saidspouts and a supplementary gate adapted to move across the discharge endof one of said spouts the two gates coperating to control the dischargefrom said spouts.

2. In a feeding device for automatic weighing-machines for grain and thelike, a main supply-hopper, a dribble supply-hopper, independentdischarge-spouts for said hoppers, and a valve comprising a main gateadapted to move across the discharge ends of both of said spouts and asupplementary gate controlled'by said main gate and adapted to moveacross the discharge end of one of said spouts` the two gatescooperating to control the discharge from said spouts.

3. In a feeding device for automatic weighing-machines for grain and thelike, a main supply-hopper, a dribble supply-hopper, independentdischarge-spouts for said hoppers, and a valve comprising a main gateadapted to move across the discharge ends ot both of said spouts andhaving an aperture adapted to register with the dribble-spout and asupplementary gate adapted to move across the discharge end of thedribble-spout, the said gates cooperating to control the discharge fromsaid spouts.

4. In a feeding device for automatic weighing-machines for grain and thelike, a main supply-hopper, a dribble supply-hopper, independentdischarge-spouts for said hoppers, a valve comprising a main gateadapted to move across the discharge ends of both of said spouts and asupplementary gate adapted to move across the discharge end of thedribblespout, the said supplementary gate being independently pivotedand adapted to swing in one direction by gravity, and means on the maingate for engaging the supplementary gate to move the same in the otherdirection.

5. In a feeding device for automatic weighing-machines for grain and thelike, a main supply-hopper, a dribble supply-hopper, independentdischarge-spouts for said hoppers, a valve comprising a main gateadapted to move across the discharge ends of both of said spouts and asupplementary gate adapted to move across the discharge end of thedribblespout, the said supplementary gate being independently pivotedand adapted to swing in A one direction by gravity, a stop for limitingthe said gravitating movement, and means on the main gate adapted toengage the supplementary gate to move the same in the other direction.

CHARLES F. BEAKBANE. WILLIAM E. HIPKINS. lVitnesses:

ERNEST HARKEN, MARSHAL HALsTEAD.

